Need information on material usage in ZAUN for an unreal engine environment art piece i'm working on

What materials were used in zaun? I know some type of stone (any knowledge on what stone exactly?), copper, iron, glass and lead. What about wood? Was wood common? do only wealthy have wood? Any wood at all except for in living plants? And the gold ish material we see in Piltover, is it also found in Zaun?
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